Finding the Fourth Proportional to 2,265.50, 3,126.12 and 1,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,265.50 : 3,126.12 = 1,321.50 : x
2. Step 2: Convert to fraction form
   2,265.50/3,126.12 = 1,321.50/x
3. Step 3: Cross multiply
   2,265.50x = 3,126.12 × 1,321.50
4. Step 4: Simplify right side
   2,265.50x = 4,131,167.58
5. Step 5: Solve for x
   x = 4,131,167.58/2,265.50
6. Step 6: Final answer
   x = 1,823.51